Document processing apparatus and document processing method

ABSTRACT

Whether all pages have the same print settings is determined before print settings are changed in a print preview, and the setting change is permitted only when all pages have the same print settings. In each layer of XPS data to be processed, whether the print setting information is not added to the element of the layer or whether the print setting information added to the element of the layer is shared by all elements of the layer is determined. A change in the print setting information by the user is accepted if one of the conditions is satisfied. When the print settings are changed, the setting change is not reflected on individual print tickets. The change is reflected on the entire job by adding a print ticket reflected with the setting change on the top element.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a document processing apparatus and adocument processing method having a so-called preview function, or thelike, for displaying a printing image to allow the user to recognize theprinting image before print processing.

2. Description of the Related Art

In a print system using a computer with Windows (registered trademark)of Microsoft Corporation installed as an operating system (OS), printdata generated by an application program (application), and the like, isstored in a spool file in an OS-standard data format. The OS invokes aprinter driver to print the print data. The printer driver reads theprint data stored in the spool file, an image generation processing unitcreates a printing image, and a printer further converts the data into aprint command that can be interpreted. The print command is transmittedto the printer, and the printer interprets the print command and formsan image on a recording medium to execute print processing.

In the printer driver, a print preview function is realized in whichprint data and print settings are analyzed before the print command istransmitted to the printer to create display data indicating the printresult, and the data is displayed in advance. The preview function isprovided as a module of the printer driver. A function is also includedin which the preview function outputs the content drawn by a renderingmodule of the printer driver or a drawing module of the OS on thedisplay unit, the content serving as a print preview (see, for example,Japanese Patent Laid-Open No. 2003-167721 or Japanese Patent Laid-OpenNo. 2004-102618). The print preview function also realizes a function ofdisplaying the print settings and making a change as necessary (see, forexample, Japanese Patent Laid-Open No. 2006-011847).

Meanwhile, a print system different from the conventional print systemhas been emerged in recent years. In the new print system (will becalled “XPS print system”), not a conventional EMF format (Enhanced MetaFile), but an XPS format (XML Paper Specification) is used as a dataformat stored in the spool file. The XPS is an open-standard electronicdocument format developed by Microsoft Corporation.

To facilitate the user to recognize the extent of the impact of changeswhen the print settings are changed in the print preview, a method isused in some cases in which the target of the print setting change islimited to a job in which all pages in the job have the same printsettings, and the change is reflected on the entire job. In that case,whether all pages in the job have the same print settings needs to bedetermined. In the XPS print system, a print ticket (PrintTicket or PT)that is XML data describing the print settings can be prepared for apart of the job such as a page. The print ticket Therefore, the printtickets need to be compared to determine whether the print settings arethe same in the pages of the document data in XPS format.

However, when the items described in the print tickets are individuallycompared, a large process load may be imposed depending on the number ofpages or the number of items described in the print tickets.Furthermore, to reflect changes on the print tickets after the printsettings are changed, the print tickets need to be updated to reflectthe changes on all pages.

SUMMARY OF THE INVENTION

The present invention has been made in view of the foregoing problems,and the present invention provides a document processing apparatus and adocument processing method for minimizing the process load ofcomparisons or updates of print settings to limit the target of printsetting change to a job in which all pages in the job have the sameprint settings.

The present invention is configured as follows. More specifically,according to an aspect of the invention, a document processing apparatusthat handles a structural document comprised of elements of ahierarchical structure, including at least one page element describedwith drawing information, and in which print setting information can beadded to each element of each layer, the document processing apparatuscomprises: a print setting determination unit configured to determine,in each layer of a structural document to be processed, whether theprint setting information is not added to the element of the layer orwhether the print setting information added to the element of the layeris shared by all elements of the layer; and a print setting informationeditor configured to accept a change in the print setting information bythe user if the print setting determination unit determines, in eachlayer of the structural document to be processed, that the print settinginformation is not added to the element of the layer or determines thatthe print setting information added to the element of the layer iscommon in all elements of the layer.

According to the configurations, the present invention can quicklydetermine, with a low process load, whether all pages have the sameprint settings in a print job.

Furthermore, the present invention can reflect the changes in the printsettings on the entire XPS data while reducing the amount of updates ofPrintTicket.

Further features of the present invention will become apparent from thefollowing description of exemplary embodiments with reference to theattached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a logical structure of an XPS.

FIG. 2 is a block diagram showing an example of a print system accordingto an embodiment of the present invention.

FIG. 3 is a block diagram showing an example of a printer driveraccording to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of a print setting dialogue boxaccording to the embodiment of the present invention.

FIG. 5 is a diagram showing an example of a preview window according tothe embodiment of the present invention.

FIGS. 6A and 6B are diagrams showing an example of the XPS illustratingbasic conditions used in the sameness determination of print settingsaccording to the embodiment of the present invention.

FIGS. 7A, 7B, 7C, and 7D are diagrams showing an example of the XPSillustrating additional conditions used in the sameness determination ofthe print settings according to the embodiment of the present invention.

FIG. 8 is a diagram showing an example of an acquisition process of anXPS part according to the embodiment of the present invention.

FIG. 9 is a diagram showing an example of a PT generation process of ajob level according to the embodiment of the present invention.

FIG. 10 is a diagram showing an example of a PT generation process of adocument level according to the embodiment of the present invention.

FIG. 11 is a diagram showing an example of a PT generation process of apage level according to the embodiment of the present invention.

FIG. 12 is a diagram showing an example of a print setting changeavailability determination process according to the embodiment of thepresent invention.

FIG. 13 is a schematic diagram showing reflection of a print settingchange on XPS data according to the embodiment of the present invention.

FIG. 14 is a diagram showing an example of a PT update process accordingto the embodiment of the present invention.

FIG. 15 is a diagram showing an example of a comparison process of printsettings using DevmodeSnapShot according to the embodiment of thepresent invention.

FIG. 16 is a schematic diagram of an example of a PT.

FIG. 17 is a diagram showing an example of a merge result of the PT.

DESCRIPTION OF THE EMBODIMENTS First Embodiment

The present invention will now be described in detail based onembodiments illustrated in the drawings. An XPS in the specification isan abbreviation of XML Paper Specification and is one of open-standardelectronic document formats developed by Microsoft Corporation.

<Configuration of XPS Document>

The XPS will be simply described first to facilitate the understandingof the specification. An XPS document has a hierarchical structure andis a structural document including elements on each layer. Specifically,the XPS document has a tree structure in which FixedDocumentSequence(hereinafter, “FDS” or “job element”) is the route or the top layer. TheFDS has one or more FixedDocument (hereinafter “FD” or “documentelement”), and the FD has one or more FixedPage (hereinafter, “FP” or“page element”). Therefore, the lower layers belong to the top layer.The FDS, the FD, and the FP will be called XPS parts in some cases andwill also be called elements of the XPS parts in some cases. The FPdescribes the content of pages of a document in XML format and includesthe content that will be actually displayed or printed. In other words,the FP describes drawing information. A plurality of FPs can share theresources, such as fonts and images, used in the page content of theFPs. The FDS, the FD, and the FP can have print settings in printtickets (hereinafter, “PT”). Thus, the print tickets are equivalent toprint setting information added to the elements. The PTs describe printsettings for printing an XPS document in XML format. The print settingsused to print the FPs are PTs in which the PTs of the FDS, the PTs ofthe parent FD of the FP to be printed, and the PTs of the FP to beprinted are merged. When the PTs are merged, the print settings of lowerlayers are prioritized. In document data in XPS format, the FP isequivalent to a page of the document, the FD is equivalent to a documentwith bundled pages, and the FDS is equivalent to a job with bundleddocuments. The job is equivalent to a group of document data.

FIG. 1 is an example of a block diagram showing a logical structure ofan XPS document. The logical structure of an XPS document 101 is a treestructure in which an FDS 103 is a route. The FDS 103 includes FDs 111and 113 as children. The FD 111 includes FPs 121 and 123 as children.The FD 113 includes an FP 125 as a child. In relation to the PTsdescribing the print settings, the FDS 103 holds a PT 131, the FD 111holds a PT 133, the FP 121 holds a PT 135, and the FD 113 holds a PT137. In other words, holding a PT indicates an association. The FPs 123and 125 do not hold the PT. The FPs 121 and 123 share resources 141,such as fonts and images, and the FP 125 uses resources 143, such asfonts and images. For example, the PT used to print the FP 121 is a PTin which the PTs 131, 133, and 135 are merged. The actual XPS documentis data obtained by compressing the structural document of FIG. 1.

FIG. 16 is an example of a PT. As described, print settings aredescribed in XML. In the PT of FIG. 16, a tag 1601 describes a settingthat the paper size is A4, and a tag 1602 describes a print setting thatthe paper type is standard paper. The PT is attached to the FDS, the FD,and the FP.

FIG. 17 is an example of print settings of an FP generated by mergingthe PTs. In the example, the print settings include five items, “PAPERSIZE”, “PAPER TYPE”, “Feeding Method”, “Print Orientation”, and“Monochrome Printing”. The print settings can be designated in thelayers of the FDS, the FD, and the FP and are also designated by adefault (user default) designated by the user. The FDS and the FD aswell as the FD and the FP of FIG. 17 are in serial parent-childrelationships. During the merge, the settings of child elements areprioritized and applied in the print settings of the PTs. Default printsettings of the user are applied to print settings that do not exist inthe PTs of any part. For example, if there is no setting of paper sizein the PTs of the FDS, the FD, and the FP as in FIG. 17, a user defaultsetting “A4” is applied as a print setting of the page level. Inrelation to the paper type, “Standard Paper” is described in the FDS,and “Postcard” is described in the FD. There is no description in the PTof the FP. In this case, rather than the setting of the FDS, the settingof the FD as a child element is applied. Therefore, the paper type“Postcard” is set in the print settings of the page level. Similarly,“Cassette” described in the PT of the FDS is applied to the feedingmethod, “Horizontal” described in the PT of the FP is applied to theprint orientation, and “ON” described in the PT of the FP is applied tothe monochrome printing. In this way, among the PTs with relevant printsettings, the setting in a lower XPS part in the tree structure isapplied as the printing setting of the page level. In which level thesetting items will be used is also designated, and before the PTs inparts of the levels lower than the designated level are merged, it isnecessary not to take the items into consideration. For example, whenthe PTs of the FP are merged, the items of the job level described inthe PTs of the FP are not reflected. On the other hand, when the PTs ofthe FDS are merged, the items of the page level described in the PTs ofthe FDS are reflected.

Hereinafter, a PT obtained by merging a user default print setting and aPT of the FDS will be called a PT of the job level. A PT obtained bymerging the PT of the job level and a PT of the FD will be called a PTof the document level. A PT obtained by merging the PT of the documentlevel and a PT of the FP will be called a PT of the page level.

<Configuration of Print System>

FIG. 2 is a block diagram showing a configuration of a print systemaccording to the embodiment of the present invention. A printer 201 isan inkjet printer that forms an image. The printer 201 forms an image ona recording medium 200 based on a print command generated by a dataprocessor (will also be called “information processor”) 202 describedbelow. The data processor 202 may be a general-purpose computerinstalled with a document processing program for executing a procedureof the present embodiment and may also be a document processingapparatus. The type of the printer does not particularly matter, and aninkjet color printer is illustrated herein. In the data processor 202,an application not shown creates a print job, and a printer driver 230generates a print command for controlling a printing operation of theconnected printer 201 based on a spooled print job. In the presentembodiment, a personal computer is used as the data processor 202. Thedata processor 202 also accepts an instruction and input related to theprint settings from the user. An OS for controlling the data processor202 is incorporated into the data processor 202, and various functionalblocks are operated under control by the OS. A communication interface203 is a communication interface for connecting the data processor 202and the printer 201. A USB as a serial interface is used in the presentembodiment. Alternatively, a serial interface, such as IEEE 1394,Ethernet (registered trademark), IrDA, IEEE 802.11, and a power line, ora parallel interface, such as Centronics and SCSI, can be used. Anywired/wireless interface can be used as long as the communications canbe realized. In this way, the print system in the present embodiment isnot a stand-alone apparatus but has a configuration in which the dataprocessor 202 and the printer 201 that forms an image are connectedthrough a specific two-way interface. However, the arrangement is notlimited to this example, and the system may be an integral print systemin which the functions of the data processor and the printer areintegrated. Functions of the printer 201 and the data processor 202 thatare not particularly required to explain the features of the presentembodiment will not be described.

Functional blocks will be described. A print setting processing unit231, also called a user interface module, is a program module for theuser to change the print settings. The print setting processing unit 231can display print setting information according to the operation of theuser and accept input, such as an edit, of the print settinginformation. The print setting processing unit 231 further reflects anaccepted change in the print settings on the print setting information.If the print settings cannot be accepted, the print setting processingunit 231 only displays the print settings and does not accept an edit.This can be applied to the entire print setting information, or can bepartially applied. A filter group 319 includes a layout processing unit321, a preview document processing unit 323, and a print commandgeneration processing unit 325. These are program modules which are alsocalled filters. The content of the process will be described withreference to FIG. 3. A data communication processing unit 233 is aprogram module that outputs a generated print command, or the like. Apreview control unit 235, also called a preview control module, performscontrol related to the preview display, such as generating preview dataaccording to a preview data instruction and displaying a designatedpage.

Blocks 240 to 244 are hardware modules forming an environment forexecuting a printer driver 230, an application, an operating system, orthe like. A central control unit 241 is a processor that executes aprogram stored in a storage unit 244, or the like, and that processesdocument data and print setting information associated with the documentdata. An information notification unit 243 inputs various signals to thecentral control unit 241. A display device such as a display can also beincluded. The storage unit 244 is comprised of a semiconductor memory, ahard disk, or the like, and stores a program as well as document data.The storage unit 244 also stores a spool file used by the operatingsystem for printing. An input operation unit 242 controls input andcontrols an input device such as a keyboard.

A storage medium supplies program codes of the various functional blocksrealized by software. Examples of the medium that can be used include aflexible disk, a hard disk, an optical disk, a magneto-optical disk, aCD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, and a ROM.

<Operation of Printer Driver>

FIG. 3 is a block diagram conceptually illustrating the print system ofFIG. 2 and mainly illustrating an OS print support function and aprinter driver for explaining the embodiment of the printer driver inthe present invention. Modules related to the present invention are theuser interface module 231 and the filter group 319 including a printsetting function. The filter group 319 is comprised of a layout filter321 that has a function of laying out the pages of the XPS data, apreview filter 323 as a filter for providing a preview function, and aprint command filter 325 that has a function of converting the XPS datainto a print command that the printer can interpret. The filtergenerally denotes a program having a function of outputting some kind ofdata through steps, such as processing, conversion, no conversion, andgeneration, based on input data. The filters indicate different names ofthe layout processing unit 321, the preview document processing unit323, and the print command generation processing unit 325 of FIG. 2.

In the print system of FIG. 3, the print data of the pages of a documentcreated by the application 301 is temporarily stored in an XPS spoolfile 317 through an OS print support function 313. The filter group 319of the printer driver converts the data into a print command that theprinter can interpret based on print setting information. The command issupplied to the printer 201 and printed.

The user interface module 231 generally provides a function of settingthe paper size and the print direction used for printing and otherattributes. The user interface module 231 returns the print settinginformation stored with setting values of a plurality of print settingitems to the application 301. An example of a print setting dialogue boxprovided by the user interface module 231 will be described below withreference to FIG. 4.

In the printing of a created arbitrary document, the application 301notifies the print start or the print end to the OS print supportfunction 313 and notifies the print setting information returned fromthe user interface module 231 to perform print settings. The application301 also notifies the drawing start or the drawing end of the pages ofthe document. The OS print support function 313 stores the content drawnby the application and the print setting information in the XPS spoolfile 317. The OS print support function invokes the filters to despool aspooled print job.

The filter group 319 of the printer driver is comprised of one or morefilters. The filter group 319 has a function of reading out a print jobfrom the XPS spool file during printing, converting the job into a printcommand that the printer can interpret, and supplying the command to theprinter 201 for printing. The filter group 319 in the present embodimentis comprised of the layout filter 321 as a layout processing unit, thepreview filter 323 as a preview document creating unit, and the printcommand filter 325 as a print command conversion unit. However, onefilter may realize the layout function and the preview function, andunnecessary filters may be removed. The present proposition is notlimited to the above filter configuration.

The layout filter 321 has a function of handling the XPS data stored inthe XPS spool file 317 as an input, executing a layout process of thepages based on the print setting information, and outputting the laidout XPS data. The layout process in the present embodiment includes, forexample, N-up printing for printing a plurality of pages on one papersurface and poster printing for printing one page on a plurality ofpaper surfaces.

The preview filter 323 handles an output of the layout filter 321 as aninput and provides the preview function to the user based on the printsettings.

The print command filter 325 handles an output of the preview filter 323as an input and has a function of converting the XPS data into a printcommand that the printer can interpret in accordance with the printsetting information and outputting the command. When the print commandfilter 325 temporarily converts the input XPS data into image data, thefilter is generally called a render filter. The render filter is oftenused in a printer driver for an inexpensive raster printer representedby an inkjet printer. When operated as a render filter, the printcommand filter 325 temporarily converts the input XPS data into imagedata. After image processing such as color space conversion andbinarization, the data is converted into a print command that the rasterprinter can interpret. If the XPS is included in the type of printcommand that the printer can interpret in a highly-functional printerrepresented by a page printer, the print command filter 325 edits theinput XPS data and outputs the XPS data. If the process in the printcommand filter 325 is not necessary, it is obvious that the input XPSdata can be output without conversion or the print command filter 325does not have to be included in the printer driver.

The printer 201 as an output device has a function of interpreting theprint command generated by the print command filter 325 and forming avisible image on printing paper. An example of the print result shown inthe print paper 200 illustrates that the layout filter 321 has executeda process of 2-up (arrangement that two pages are reduced and laid outon one surface of the sheet).

<Print Setting Screen>

FIG. 4 is a diagram showing an example of a print setting dialogue boxdisplayed to set a print mode or perform various paper settings in thepresent embodiment. In FIG. 4, a print setting dialogue box 401 iscomprised of display areas 402, 403, 404, 405, 406, 408, 409, 410, 411,420, 422, 423, 424, 425, 431, and the like. There are a significantlygreat number of displayed items in the print settings. Therefore, a tabsheet is usually used to classify the setting items by content so thatthe items can be easily viewed.

FIG. 4 shows a display example when a basic setting tab 402 is selected.A simplified display area 420 of the basic setting displays not onlycharacter information, but also information in a visually appealingform. A paper type selecting unit 422 displays the paper type, and theuser can select the paper type. The paper type selecting unit 422 isformed by a drop-down menu and usually displays the selected paper type.A list of selectable paper types are displayed by clicking there. Theselectable paper types are sheets printable by the printer and includeillustrated standard paper, as well as glossy paper, coated paper,photographic paper, postcard, new-year postcard, and the like. A feedingmethod selecting unit 423 displays a feeding method for the printer mainbody to feed the paper, and the user can select the feeding method. Theuser can use the feeding method selecting unit 423 to select, forexample, a paper feed tray and a paper cassette as an automatic paperfeed port as well as “Manual Feeding” for manually feeding the printerpaper sheet by sheet. A print quality selecting unit 424 is an item forthe user to set the quality of printing. A color adjusting unit 425 isan item for the user to adjust the color of printing. A monochromeprinting setting unit 426 is a checkbox for making the print resultblack and white even if the printed document is colored. A preview printsetting unit 427 is a checkbox for checking how the various printsettings are reflected on the printed document before the actualprinting by the printer. When a standard setting unit 431 is pressed,the settings of the basic settings 402 are returned to the standard(setting at shipment).

The user can press an OK button 408 after selecting the items to closethe print setting dialogue box 401 to reflect the selected printsettings on printing. The print setting dialogue box 401 closes when theuser presses a cancel button 409, and the content of the selectedsetting items are abandoned and not reflected on printing. Theapplication button 410 can reflect the selected print settings onprinting while the print setting dialogue box 401 remains open. The helpbutton 411 can display explanatory texts related to the setting items ofthe basic settings 402 on a different window.

<Preview Window of Preview Control Module>

FIG. 5 shows an example of a display screen (preview window) provided bya preview control module in the present embodiment. A print previewwindow 501 serves as a display area for displaying a preview image,print settings of a print job, and the like, and input means for theuser to change the display method of the preview image, and the like.

A menu bar 502 allows the user to select an instruction to thepreviewer, such as display switching, in a menu format. The area whereuser operation units 503 to 506 are prepared is a tool bar, and the usercan easily perform operations, such as switching the preview page, bypressing a tool bar 503 without using the menu bar 502. A page switchbutton 503 is comprised of four buttons, and the preview display can beswitched to the top page, the previous page, the next page, and the lastpage. A drop-down list 504 is a drop-down list for changing the displaysize of the preview image, and entire display, 100% display, 200%display, and the like, can be selected. The user can press a print startbutton 505 to end the previewer, and the previewed XPS document forpreview can be printed. The user can press a print cancel button 506 toend the previewer and cancel the print job. A preview display area 507uses the content of the XPS file for preview to display printing paperand a visible image expected to be formed on the printing paper as aprinting image. A display area 508 displays setting values ofrepresentative setting items related to the print settings of the printjob to which the preview function is applied. FIG. 5 illustrates anexample in which the total number of pages of document is three pages,the page number currently previewed and displayed is page 2, the numberof copies set in the print settings is one, and the same-size printingis set. A display area 509 displays setting values of representativesetting items related to the print settings of the currently displayedpage in the print job to which the preview function is applied. FIG. 5illustrates an example in which the output paper size is A4, the papertype is standard paper, and cassette is set as the feeding method. Theuser can set and change the paper type and the feeding method in theprint preview.

In the present embodiment, the display screen illustrated in FIG. 5 isdisplayed when a print job associated with print setting information inwhich the preview setting is ON is spooled, the OS print supportfunction activates a filter pipeline, and the preview filter activates apreview control module.

<Change in Print Settings>

As described, there is a print preview function including functions ofchecking the print result, checking the print settings, and changing apart of the settings. If a change in the print settings is permitted forindividual pages, it may be difficult for the user to recognize theextent of the impact of the changes. Therefore, a method has beenimplemented in which the print settings can be changed only when allpages have the same print settings, and the changed settings arereflected on the entire job.

The fact that all pages have the same print settings in the XPS meansthat the PTs of the page level in all pages have the same settings. ThePT of the page level is obtained by merging the PT of the default printsetting of the user, the PT of the FDS, the PT of the parent FD of theFP to be printed, and the PT of the print target FP. Describing with anexample of FIG. 1, the page level PT of the FP 121 is a PT in which thePT of the default print setting of the user, the PT 131 of the FDS 103,the PT 133 of the parent FD 111, and the PT 135 of the FP 121 aremerged. Since there is no PT in the FP in the FP 123, the page level PTof the FP 123 is a PT in which the PT of the default print setting ofthe user, the PT 131 of the FDS 103, and the PT 133 of the parent FD 111are merged. Similarly, since there is no PT in the FP in the FP 125, thepage level PT is a PT in which the PT of the default print setting ofthe user, the PT 131 of the FDS 103, and the PT 137 of the parent FD 113are merged. Therefore, in order for all pages to have the same printsettings, the PT, in which the PT 133 of the FD 111 and the PT 135 ofthe FP 121 are merged, the PT 133 of the FD 111, and the PT 137 of theFD 113 need to have the same print settings. To simply determine thesameness, the common print settings, or the PT of the default printsetting of the user and the PT 131 of the FDS 103 in this case, can beremoved from the merging target.

<Print Setting Determination Process Between Pages>

There is a method of comparing all PTs of the page level to determinewhether all pages in a job have the same print settings. In that case,the print settings described in the PTs need to be compared one by one,and a large process load may be imposed depending on the number of pagesor the content of the settings. Furthermore, the sameness may not bedetermined when the PTs are compared in the binary level because thereis a difference in the description or the aligned order even in the samesettings. Thus, a method of determination based on the arrangement ofthe PTs will be proposed to determine the same print settings whileminimizing the comparison of the content of the PTs.

If there is no PT in any FD and FP, the print settings of all pages aredetermined to be the same. An example of FIG. 6A will be described inwhich there is a PT 621 only in an FDS 601, and there is no PT in FDs603 to 605 and FPs 607 to 611. In this case, the PTs of the page levelof all FPs are PTs obtained by merging the PT of the default printsetting of the user and the PT 621 of the FDS 601 and are the same printsettings. On the other hand, there is a case in which a PT exists in theFD and the FP as shown in FIG. 6B. There are a PT 651 in an FDS 631, aPT 653 in an FD 633, and PTs 655 and 657 in FPs 639 and 641. In thiscase, the PTs of the page level are obtained by merging the PTs 651 and653 with the PT of the default print setting in the FP 637, merging thePTs 651, 653, and 655 with the PT of the default printing setting in theFP 639, and merging the PTs 651 and 657 with the PT of the defaultprinting setting in the FP 641. Therefore, the FPs have different PTs ofthe page level, and it is unlikely that the print settings are the same.In this way, the presence of PT in the FD and the FP is a basiccondition for determining whether all pages have the same printsettings.

The accuracy of determination is further improved by adding thefollowing conditions to the above condition.

If there is a PT without description of the print settings in the FD andthe FP (hereinafter, “blank PT”), it is assumed that the PT is notadded.

If there is only one FP, it is assumed that all pages have the sameprint settings even if there is a PT in the FD and the FP.

If there is only one FD, it is assumed that all pages have the sameprint settings if there is no PT in the FP even if there is a PT in theFD.

If there is one FD or if there is no PT in any FD, it is assumed thatall pages have the same print settings if the same PT is associated withall FPs.

As shown in FIG. 7A, if the PT is blank even if there is a PT in the FDor the FP, the settings are not influenced when the PT of the defaultprint setting of the user and the PT of the FDS are merged. Therefore,it is equivalent to the case without the PT. More specifically, in FIG.7A, the PTs of the page level of the FPs 707 to 711 are all obtained bymerging the PT of the default print setting of the user and a PT 721 ofan FDS 701, and it can be stated that all pages have the same printsettings. Although the content of the PT needs to be referenced todetermine whether the PT is blank, the determination is possible withextremely small load since no setting is described in the PT.

If there is only one FP as in FIG. 7B, it is obvious that there is nocase that the print settings are different page by page. Therefore, itcan be stated that all pages have the same print settings even if thereis a PT in the FD and the FP.

If there is only one FD as in FIG. 7C, all FPs have the same parent FD,and the same PT of the FD is used for merging in creating the PT of thepage level. Therefore, if there is one FD, all pages have the same printsettings regardless of the presence of the PT of the FD if there is noPT in the FP. In FIG. 7C, all PTs of the page level of FPs 755 to 759are obtained by merging the PT of the default print setting of the user,a PT 761 of an FDS 751, and a PT 763 of an FD 753. It can be stated thatall pages have the same print settings.

If all FPs are associated with the same PT as in FIG. 7D, all PTs of thepage level are the same if the PTs of the parent FD of all FPs are thesame. Therefore, if there is only one FD or if there is no PT in any FD,all pages have the same print settings. In FIG. 7D, the PTs of the pagelevel of FPs 775 to 779 are all obtained by merging the PT of thedefault print setting of the user, a PT 781 of an FDS 771, a PT 783 ofan FD 773, and an PT 785 commonly associated with all FPs. Therefore, itcan be stated that all pages have the same print settings.

In summary, it is determined that all pages have the same print settingsif the print settings of the elements of the layers are common in theelements. Specifically, it can be determined that the pages of astructural document have the same print settings if the print settinginformation is added to the elements of a layer in the XPS data to beprocessed (or structural document) or if all elements of the layer sharethe print setting information added to the elements of the layer and alllayers meet the condition. In this way, the sameness can be formallydetermined regardless of the actual print settings, and simple and quickdetermination is possible.

<Preview Filter Process>

FIG. 8 is an example of a flow chart of the determination processdescribed with FIGS. 7A to 7D in an acquisition process of XPS partsexecuted by the preview filter 323. The present process may be executednot only by a preview filter, but also by, for example, the previewcontrol module 235 before the preview process.

In step S101, the preview filter 323 sequentially acquires XPS partstransferred from the spool or the previous filter. The acquired XPSparts are FDSs, FDs, and FPs. If it is determined in step S103 that theXPS parts are acquired, processes are executed according to the type ofthe acquired parts in accordance with the determination result. Thetypes of XPS parts are described with identifiers, or the like, in theelements. On the other hand, if the XPS parts are not acquired, it isdetermined that all XPS parts of the XPS data are acquired, and theprocess diverges to step S141.

In steps S111, S121, and S131, the acquired parts are discriminated. Ifthe acquired part is an FDS, a PT of the job level corresponding to theFDS is created in step S113. A PT generation process of the job levelwill be described below with reference to FIG. 9. If the acquired partis an FD, a PT of the document level corresponding to the acquired FD iscreated in step S123. A PT generation process of the document level willbe described below with reference to FIG. 10. If the acquired part is anFP, a PT of the page level corresponding to the acquired FP is createdin step S133. A PT generation process of the page level will bedescribed below with reference to FIG. 11. A URI (or a link, or can alsobe called association) of the PT is acquired for the PT of the FP (stepS135).

The processes are repeated until all XPS parts are acquired. The processmoves to step S141 when all XPS parts are acquired, and whether a printsetting change in preview will be permitted is determined. Adetermination process of print setting change availability in previewwill be described below with reference to FIG. 12. Although a method ofdetermination after the acquisition of the XPS parts will be describedherein, the determination process can also be executed during theacquisition of the XPS parts.

<Merge Process of PT>

FIG. 9 illustrates details of step S113 of FIG. 8 and is an example of aPT generation process of the job level. In step S201, the PT of thedefault print setting of the user is first acquired. In step S203, thePT of the acquired FDS is acquired. Since the PT does not always existin the FDS, whether the PT of the FDS is acquired is determined (S205).The process moves to S207 if the PT of the FDS is acquired and moves toS211 if not acquired. In step S207, whether the acquired PT is a blankPT is determined. The process moves to step S209 if the print settingsare described and moves to step S211 if the PT is blank. In step S209,the PT of the default print setting of the user and the PT of the FDSare merged to generate a PT of the job level. In step S211, since thereis no PT in the FDS or the PT is blank so that the PT is assumed not toexist, the PT of the default print setting of the user is set as the PTof the job level without merging.

FIG. 10 illustrates details of step S123 of FIG. 8 and is an example ofa PT generation process of the document level. The PT of the acquired FDis first acquired in step S301, and whether the PT is acquired isdetermined (S303). The process moves to step S305 if the PT is acquiredand moves to step S309 if not acquired. In step S305, whether theacquired PT is a blank PT is determined. The process moves to step S307if the print settings are described and moves to step S309 if the PT isblank. In step S307, the PT of the job level and the acquired PT of theFD are merged to generate a PT of the document level. In step S309,since there is no PT of the FD, the PT of the job level is set as the PTof the document level. Since the FDS is always acquired before the FD inthe XPS part acquisition, there is always a PT of the job level when thePT of the document level is generated.

FIG. 11 illustrates details of step S133 of FIG. 8 and is an example ofa PT generation process of the page level. The PT of the acquired FP isfirst acquired in step S401, and whether the PT of the FP is acquired isdetermined (S403). The process moves to step S405 if the PT of the FP isacquired and moves to S409 if not acquired. In step S405, whether theacquired PT is a blank PT is determined. The process moves to step S407if the print settings are described and moves to step S409 if the PT isblank. In step S407, the PT of the document level of the parent FD ofthe FP and the PT of the acquired FP are merged to generate a PT of thepage level. In step S409, since there is no PT of the FP, the PT of thedocument level of the parent FD is set as the PT of the page level.Since the parent FD of the FP is always acquired before the acquisitionof the FP, there is always a PT of the document level of the parent FDwhen the PT of the page level is generated.

<Determination Process of Availability of Change in Print SettingInformation in Preview>

FIG. 12 is an example of a flow chart of a process of determiningwhether all pages have the same print settings and determining whetherto permit a print setting change by the preview. Whether there is atleast one PT in the acquired FD or FP is determined first in step S501.However, even if there is a PT, it is determined that there is no PT ifthe PT is a blank PT. The process moves to step S511 if there is no PT,and the user is permitted to change the print settings in the printpreview. The permission can be realized by, for example, setting aprohibit flag of setting change to a value indicating the changepermission. The process moves to step S503 if there is a PT. In stepS503, the total number of FPs in the job is determined. The processmoves to step S511 if there is only one acquired FP, and the user ispermitted to change the print settings in the print preview. The processmoves to step S505 if there are a plurality of FPs. In step S505, thetotal number of FDs in the job is determined. The process moves to stepS507 if there is only one acquired FD. The process moves to step S513 ifthere are also a plurality of FDs, and the change in the print settingsin the print preview is not permitted. Whether there is a PT in the FPis determined in step S507. The process moves to step S511 if there isno PT in any FP, and the user is permitted to change the print settingsin the print preview. The process moves to step S509 if there is a PT inthe FP. In step S509, whether all FPs are associated with the same PT isdetermined. The process moves to S511 if the URIs of the PTs acquiredwhen the PTs of the FP are acquired are the same in all FPs, i.e., ifthe URIs are associated with the same print setting information, and theuser is permitted to change the print settings in the print preview. Theprocess moves to step S513 if the associated PTs are different page bypage, and the change in the print settings in the print preview isrefused. The refusal can be realized by, for example, setting theprohibit flag of the setting change to a value indicating the changeprevention.

If a change in the print settings is instructed from the user interfaceduring the preview display, the prohibit flag of the setting change isreferenced, for example. If the flag indicates the change permission,the change in the setting value is accepted. If the flag indicates theprohibition, the setting value is just displayed, and the change is notaccepted. In the present embodiment, this is applied only to the settingchange during the preview display. The prohibit flag of the settingchange is not referenced during the setting change without previewdisplay, and the setting change is accepted. However, other than thepreview display, the prohibit flag of the setting change provided by avalue in the procedure of FIG. 12 may be referenced when a changeoperation of the print settings is performed in a case that the changein the print settings is permitted only when all pages have the sameprint settings.

As a result of the determination process, whether the page-by-page printsettings are the same in all pages can be highly accurately determinedwhile minimizing the reference to the content of the PTs.

<Reflection of Setting Changes (Print Setting Information Edit>

When the change in the print settings in the print preview is permittedin the determination process and the user changes the print settings inthe print preview, the changed settings need to be reflected on the PTs.Basically, on which PTs the changed print settings will be reflecteddepends on the setting item. For example, the PT of the FDS is updatedin the case of a setting item that needs to be reflected on the entirejob, and the PT of the FP needs to be updated in the case of a settingitem reflected only on a specific page. However, in the presentembodiment, the change in the print settings is permitted only when allpages have the same print settings, and the change is reflected on allpages. More specifically, the same print settings are described in allPTs of the page level, and the settings after the print setting changeneeds to be reflected on all pages. Therefore, a method is proposed inwhich the PTs of the page level are updated according to the printsetting changes, the updated PTs are added to the FDS, and the PTs inthe FD and the FP are deleted.

FIG. 13 is an example of XPS data created when a change in the printsettings is reflected by the method of the present embodiment. XPS data1301 before change is comprised of an FDS 1311, an FD 1313, and FPs 1315to 1319. There are a PT 1321 in the FDS 1311, a PT 1323 in the FD 1313,and a PT 1325 in the FPs 1315 to 1319. In this case, all PTs of the pagelevel of the FP are PTs in which the PT of the default print setting ofthe user, the PT 1321 of the FDS 1311, the PT 1323 of the FD 1313, andthe PT 1325 of the FP are merged. As a result, it is determined that allpages have the same print settings, and the print setting change in theprint preview is permitted. When the print settings are changed, theupdates are reflected on the PTs of the page level. The PT 1331 of thepage level with reflected changes replaces the PT 1321 of the FDS 1311.The PT 1323 of the FD 1313 and the PT 1325 of the FPs 1315 to 1319 arefurther deleted to form XPS data 1303 in which the changed printsettings are reflected. Since there is no PT in the FD and the FP in theXPS data 1303, all PTs of the page level of the FP are obtained bymerging the PT of the default print setting of the user and the PT 1331newly added to the FDS 1311. As a result, a change in the print settingsby the user can be reflected on all pages with minimum change in thePTs.

<Print Ticket Update Process>

FIG. 14 is an example of a flow chart of a PT update process forreflecting the print setting changes on the PTs when the change in theprint settings is permitted and the print settings are actually changed.This procedure is executed by, for example, the preview filter 323 andthe preview control module 325. First, in step S601, whether the printsettings are changed is determined. The determination can be realizedby, for example, referencing a flag, or the like, storing that thesetting change operation is performed. The flag needs to be reset afterthe process of FIG. 14. The process moves to step S603 if the printsettings are changed, and if there is no change, the update processends. In step S603, whether there is a PT in the FD or the FP isdetermined. The process moves to step S605 if there is no PT, and theprocess moves to step S607 if there is a PT. The PTs of the job levelare updated in step S605 based on the changes, and the process moves tostep S615. Since there is no PT in the FD and the FP, the PTs of the joblevel are synonymous with the PTs of the page level. In step S607,whether there is a PT in the FP is determined. The process moves to stepS609 if there is a PT, and the process moves to step S611 if there is noPT. The PTs of the page level are updated in step S609 based on thechanges, and the process moves to step S613. The PTs of the documentlevel are updated in step S611 based on the changes, and the processmoves to step S613. Since there is no PT in the FP, the PTs of the joblevel are synonymous with the PTs of the page level. All PTs in the FDand the FP are deleted in step S613, and the process moves to S615. Instep S615, whether there is a PT in the FDS is determined. The processmoves to step S617 if there is a PT, and the process moves to step S619if there is no PT. The PTs in the FDS are deleted in step S617, and theprocess moves to step S619. The updated PTs are added to the FDS in stepS619 based on the setting changes, and the process ends. As a result,the changed print settings are reflected on all pages in the job.

Although the determination process of print settings and the reflectionprocess of setting changes are executed in the preview filter in thepresent embodiment, the processes can be executed in any stage of thedriver process. The processes can be applied not only to the printerdriver process, but also to, for example, an application that edits XPSdocuments.

Second Embodiment

In the first embodiment, whether all pages have the same print settingsis determined based on the arrangement of the PTs, and the content ofthe PTs is not referenced except in the determination of a blank PT.However, even if there are different PTs in the FPs, it can be statedthat the print settings of the pages are the same if the settingsdescribed in all PTs are the same. In such a case, the print settingsthat are actually the same are determined to have different settings inthe first embodiment. Therefore, in addition to the method of the firstembodiment, a method is proposed in the present embodiment in whichDevmodeSnapShot is used to compare the settings without comparing theindividual print settings described in the PTs. The DevmodeSnapShot isformed by converting DEVMODE as a data structure including print settinginformation, or the like, into binary data and is described in the PT.Since the DevmodeSnapShots include the same data if the print settingsare the same, whether the print settings are the same can be determinedby comparing the binary data of the DevmodeSnapShots.

<Comparison Process of DevmodeSnapShot>

FIG. 15 is an example of a flow chart of a DevmodeSnapShot comparisonprocess. Whether there are a plurality of FDs is determined in stepS701. If there is one FD, the process moves to step S709 as there is noneed to compare the DevmodeSnapShot of the FD. The process moves to stepS703 if there are a plurality of FDs. The DevmodeSnapShots included inthe PTs of the FDs are compared in steps S703 to S707. Since theDevmodeSnapShot is not always included in all PTs, whether there isDevmodeSnapShot in all PTs of the FDs is determined in step S703. Ifthere is DevmodeSnapShot in all PTs of the FDs, the process moves tostep S705. If not all PTs of the FDs include the DevmodeSnapShot, theprocess moves to step S717. In step S717, the print setting change bythe user in the print preview is not permitted, and the process ends. Instep S705, the DevmodeSnapShots included in the PTs of the FDs arecompared, and the process moves to step S707. As a result of thecomparison, the process moves to step S709 if all DevmodeSnapShots arethe same, and the process moves to step S717 if there is a differentDevmodeSnapShot. In step S717, the print setting change by the user inthe print preview is not permitted, and the process ends. Similarly, theDevmodeSnapShots included in the PTs of the FPs are compared in stepsS709 to S713. In step S709, whether there are DevmodeSnapShots in allPTs of the FDs is determined. The process moves to step S711 if thereare DevmodeSnapShots in all PTs of the FDs, and the process moves tostep S717 if not all PTs of the FPs include the DevmodeSnapShot. In stepS717, the print setting change by the user in the print preview is notpermitted, and the process ends. In step S711, the DevmodeSnapShotsincluded in the PTs of the FPs are compared, and the process moves tostep S715. As a result of the comparison, the process moves to step S715if all DevmodeSnapShots are the same. In step S715, the print settingchange by the user in the print preview is permitted, and the processends. If there is a different DevmodeSnapShot, the process moves to stepS717. In step S717, the print setting change by the user in the printpreview is not permitted, and the process ends.

There are PTs in all FDs and FPs in the description of the method.However, in a part without PT, the PT of the parent part of the part ishandled as the PT of the part. For example, if there is no PT in the FD,the PT of the FDS is alternatively handled as the PT of the FD. The PTof the parent FD is also used if there is no PT in the FP, and theparent FDS is further handled as the PT of the FP if there is no PT inthe parent FD either.

According to the method, in relation to the data in whichDevmodeSnapShots are described in the PTs, whether the print settingsare the same can be determined by comparing the binary data withoutcomparing the individual settings described in the PTs. Thedetermination accuracy can be improved by implementing the presentmethod in conjunction with the method of the first embodiment.

Other Embodiments

Aspects of the present invention can also be realized by a computer of asystem or apparatus (or devices such as a CPU or MPU) that reads out andexecutes a program recorded on a memory device to perform the functionsof the above-described embodiment(s), and by a method, the steps ofwhich are performed by a computer of a system or apparatus by, forexample, reading out and executing a program recorded on a memory deviceto perform the functions of the above-described embodiment(s). For thispurpose, the program is provided to the computer for example via anetwork or from a recording medium of various types serving as thememory device (e.g., computer-readable medium).

While the present invention has been described with reference toexemplary embodiments, it is to be understood that the invention is notlimited to the disclosed exemplary embodiments. The scope of thefollowing claims is to be accorded the broadest interpretation so as toencompass all such modifications and equivalent structures andfunctions.

This application claims the benefit of Japanese Patent Application No.2008-318941, filed Dec. 15, 2008 which is hereby incorporated byreference herein in its entirety.

1. A document processing apparatus that handles a structural documentcomprised of elements of a hierarchical structure, including at leastone page element described with drawing information, and in which printsetting information can be added to each element of each layer, saiddocument processing apparatus comprising: a print setting determinationunit configured to determine, in each layer of a structural document tobe processed, whether the print setting information is not added to theelement of the layer or whether the print setting information added tothe element of the layer is shared by all elements of the layer; and aprint setting information editor configured to accept a change in theprint setting information by the user if said print settingdetermination unit determines, in each layer of the structural documentto be processed, that the print setting information is not added to theelement of the layer or determines that the print setting informationadded to the element of the layer is common in all elements of thelayer.
 2. The document processing apparatus according to claim 1,wherein said print setting determination unit determines that the printsetting information is not added to the element if the content of theelement is blank even if the print setting information is added to theelement of the layer.
 3. The document processing apparatus according toclaim 1, wherein said print setting determination unit determines thatthe print setting information is common in all elements of a layer ifthe same print setting information is associated with all elements inthe layer.
 4. The document processing apparatus according to claim 1,wherein the structural document includes a layer of the page element, alayer of a document element including one or more page elements, and alayer of a job element including one or more document elements.
 5. Thedocument processing apparatus according to claim 1, wherein said printsetting determination unit compares, in each layer, the print settinginformation added to the elements of the layers to determine whether theprint setting information added to the elements of the layers is thesame in all layers if said print setting determination unit does notdetermine, in each of the layers of the structural document to beprocessed, that the print setting information is not added to theelement of the layer and that the print setting information added to theelement of the layer is shared by all elements of the layer, and saidprint setting information editor accepts a change in the print settinginformation by the user if the print setting information added to theelements of the layers is determined to be the same in all layers. 6.The document processing apparatus according to claim 1, wherein afteraccepting a change in the print setting information by the user, saidprint setting information editor adds the print setting informationreflected with the change to the element of the top layer and deletesthe print setting information added to the elements of the lower layers.7. The document processing apparatus according to claim 1, furthercomprising a previewer configured to display a preview of the content ofthe structural document, wherein said print setting determination unitperforms determination when said previewer displays the preview of thestructural document, and said print setting information editor accepts achange in the print setting information according to the determinationresult by said print setting determination unit when said previewerdisplays the preview of the structural document.
 8. The documentprocessing apparatus according to claim 4, wherein the structuraldocument is XPS data, and the print setting information is a printticket.
 9. A document processing method by a document processingapparatus that handles a structural document comprised of elements of ahierarchical structure, including at least one page element describedwith drawing information, and in which print setting information can beadded to each element of each layer, said document processing methodcomprising: a print setting determination step of determining, in eachlayer of a structural document to be processed, whether the printsetting information is not added to the element of the layer or whetherthe print setting information added to the element of the layer isshared by all elements of the layer; and a print setting informationedit step of accepting a change in the print setting information by theuser if it is determined in said print setting determination step, ineach layer of the structural document to be processed, that the printsetting information is not added to the element of the layer or that theprint setting information added to the element of the layer is common inall elements of the layer.
 10. A computer-readable recording mediumrecording a program for a computer to execute said document processingmethod according to claim
 9. 11. A computer-readable recording mediumrecording a program for realizing a document processing method by acomputer executing the program, said method handling a documentincluding a document element with bundled page elements and a jobelement with bundled document elements and capable of adding printsetting information to the elements, said method comprising: adetermination step of determining whether the print setting informationis added to the page elements and the document elements; and a changingstep of not accepting a change in print settings by the user if it isdetermined in said determination step that the print setting informationis added to the page elements and the document elements and of acceptinga change in the print settings by the user if it is determined in saiddetermination step that the print setting information is not added tothe page elements and the document elements.
 12. The computer-readablerecording medium according to claim 11, wherein in said changing step, achange in the print settings by the user is not accepted if it isdetermined in said determination step that the print setting informationis added to the page elements and the document elements and the printsetting information of the page elements and the document elements arenot blank, and a change in the print settings by the user is accepted ifit is determined in said determination step that the print settinginformation is added to the page elements and the document elements andthe print setting information of the page elements and the documentelements are blank.
 13. The computer-readable recording medium accordingto claim 11, wherein in said changing step, a change in the printsettings by the user is not accepted if it is determined in saiddetermination step that the print setting information is added to thepage elements and the document elements and the total number of pageelements is not one, and a change in the print settings by the user isaccepted if it is determined in said determination step that the printsetting information is added to the page elements and the documentelements and the total number of page elements is one.
 14. Thecomputer-readable recording medium according to claim 11, wherein insaid changing step, a change in the print settings by the user is notaccepted if it is determined in said determination step that the printsetting information is added to the page elements and the documentelements, the total number of document elements is one, and the printsetting information is added to the page elements, and a change in theprint settings by the user is accepted if it is determined in saiddetermination step that the print setting information is added to thepage elements and the document elements, the total number of documentelements is one, and the print setting information is added to the pageelements.
 15. The computer-readable recording medium according to claim11, wherein in said changing step, a change in the print settings by theuser is not accepted if it is determined in said determination step thatthe print setting information is added to the page elements and thedocument elements, the total number of document elements is one, and thepage elements do not have the same print setting information, and achange in the print settings by the user is accepted if it is determinedin said determination step that the print setting information is addedto the page elements and the document elements, the total number ofdocument elements is one, and the page elements have the same printsetting information.